<div class="swiper-wrapper">
  <div class="swiper-slide slider-item" style="background-image:url('/@@/images/home/slider1.jpg')"></div>
  <div class="swiper-slide slider-item" style="background-image:url('/@@/images/home/slider2.jpg')"></div>
  <div class="swiper-slide slider-item" style="background-image:url('/@@/images/case/c_2.jpg')"></div>
  <div class="swiper-slide slider-item" style="background-image:url('/@@/images/case/c_6.jpg')"></div>
</div>